Motorhome Water Pump Problem

TR53
TR53 Forum Participant Posts: 2
edited August 2016 in Motorhomes #1

Bailey Motorhome, switched the pump onto the ON position on the master switch and it immediately starts up and dumps all the fresh water outside under the van through and outlet/overflo pipe.   Has anyone experienced this problem?  

 

Comments

  • downhill222
    downhill222 Forum Participant Posts: 19
    edited August 2016 #2

    Sounds like maybe your frost control valve has opened?

    Chech this out as a start :

    https://www.truma.com/uk/en/water-systems/accessories-water-system.php

  • DavidKlyne
    DavidKlyne Club Member Posts: 13,864 ✭✭✭
    5,000 Likes 1000 Comments Name Dropper Photogenic
    edited August 2016 #3

    I wonder if the emptying valve for the water system is still in the open position? Somewhere between the pump and the water heater is a three way lever, In the upright position it will drain the water. The only alternative I can think of is that a waper
    pipe has come loose. The pump will always come on for a few seconds just to prime the system but it should go off after a very short time.

    David

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited August 2016 #4

    it may be the boiler dump valve left in the open position from the last time it was drained, or even an automatic frost protection valve which might need closing.

    had both these on our van, usually first time out after draining down....brain fade i guess....Wink

    edit: snap you two.....even with faded brain, great minds etc....Happy

  • young thomas
    young thomas Forum Participant Posts: 11,356
    1000 Comments
    edited August 2016 #5

    you can tell which one it is by getting under the van and tracing the discharging pipe back up into the van to locate the source.

  • Chrisptm
    Chrisptm Forum Participant Posts: 3
    edited September 2016 #6

    Same thing happend on our swift motorhome it turned out to be the vent pipe on the truma water heater 

    when you empty the water heater ( for over wintering  ) via the valve that's normally on the floor or in a cupboard somewhere there is a one way valve that lets air in the heater to allow it to drain the water out otherwise there would be a vacuum and the
    water would drain very slowly ( Basicly a plastic ball on a seat in a one way valve  ) 

    on our van the ball disintegrated so as soon as the water pump switched on the water pumped out the vent pipe that came out under the van (Truma do the spares for this very problem)

    Hope this makes sense 

    Chris

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